/**
  ******************************************************************************
  * @file    stm32fxxx_it.c
  * @author  MCD Application Team
  * @version V1.1.0
  * @date    19-March-2012
  * @brief   Main Interrupt Service Routines.
  *          This file provides all exceptions handler and peripherals interrupt
  *          service routine.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */ 

#include "stm32fxxx_it.h"
#include "usb_core.h"
#include "usbd_core.h"
#include "usbd_hid_core.h"
#include "usb_conf.h"

extern USB_OTG_CORE_HANDLE  USB_OTG_dev;
extern uint32_t USBD_OTG_ISR_Handler (USB_OTG_CORE_HANDLE *pdev);

static uint8_t HID_Buffer[4];
static int     s_counter = 0;

/******************************************************************************/
/*             Cortex-M Processor Exceptions Handlers                         */
/******************************************************************************/

/**
* @brief   This function handles NMI exception.
* @param  None
* @retval None
*/
void NMI_Handler(void)
{
}

/**
* @brief  This function handles Hard Fault exception.
* @param  None
* @retval None
*/
void HardFault_Handler(void)
{
  /* Go to infinite loop when Hard Fault exception occurs */
  while (1)
  {
  }
}

/**
* @brief  This function handles Memory Manage exception.
* @param  None
* @retval None
*/
void MemManage_Handler(void)
{
  /* Go to infinite loop when Memory Manage exception occurs */
  while (1)
  {
  }
}

/**
* @brief  This function handles Bus Fault exception.
* @param  None
* @retval None
*/
void BusFault_Handler(void)
{
  /* Go to infinite loop when Bus Fault exception occurs */
  while (1)
  {
  }
}

/**
* @brief  This function handles Usage Fault exception.
* @param  None
* @retval None
*/
void UsageFault_Handler(void)
{
  /* Go to infinite loop when Usage Fault exception occurs */
  while (1)
  {
  }
}

/**
* @brief  This function handles SVCall exception.
* @param  None
* @retval None
*/
void SVC_Handler(void)
{
}

/**
* @brief  This function handles Debug Monitor exception.
* @param  None
* @retval None
*/
void DebugMon_Handler(void)
{
}

/**
* @brief  This function handles PendSVC exception.
* @param  None
* @retval None
*/
void PendSV_Handler(void)
{
}

/**
* @brief  This function handles SysTick Handler.
* @param  None
* @retval None
*/
void SysTick_Handler(void)
{
  if (s_counter++ < 100) {
    return;
  }
  
  HID_Buffer[0] = 0;
  HID_Buffer[1] = 0;
  HID_Buffer[2] = 0;
  HID_Buffer[3] = 0;

  USBD_HID_SendReport(&USB_OTG_dev, HID_Buffer, 4);
  s_counter = 0;
}

/**
* @brief  This function handles OTG_HS Handler.
* @param  None
* @retval None
*/
void OTG_HS_IRQHandler(void)
{
  USBD_OTG_ISR_Handler(&USB_OTG_dev);
}


